| No | Part number | Description ( Function ) | Manufacturers | |
| 14 | 2SC372 | (2SCxxx) Low Level and General Purpose Amplifiers w w w .d e e h s a t a . u t4 m o c |
 Micro Electronics |
|
| 13 | 2SC372 | Silicon NPN Epitaxial Transistor |
 ETC |
|
| 12 | 2SC3720 | Power Transistor INCHANGE Semiconductor isc Product Specification isc Silicon NPN Power Transistor 2SC3720 DESCRIPTION ·High Collector-Emitter Breakdown Voltage: V(BR)CEO= 800V (Min) ·High Switching Speed ·Wide Area of Safe Operation APPLICATIONS ·Designed for high speed switching and horizontal deflection output applications. ABSOLUTE MAXIMUM RATINGS(Ta=25℃) SY |
 Inchange Semiconductor |
|
| 11 | 2SC3722K | EPITAXIAL PLANAR NPN SILICON TRANSISTOR |
 ROHM Semiconductor |
|
| 10 | 2SC3723 | MOLD TYPE BIPOLAR TRANSISTORS |
ETC |
|
| 9 | 2SC3723 | SILICON POWER TRANSISTOR SavantIC Semiconductor Product Specification Silicon NPN Power Transistors 2SC3723 DESCRIPTION ·With TO-220C package ·High voltage ,high speed switching ·High reliability APPLICATIONS ·Switching regulators ·Ultrasonic generators ·High frequency inverters ·General purpose power amplifiers PINNING PIN 1 2 3 Base Collector;connected to mounting base |
 SavantIC |
|
List of most widely used semiconductors
| Part Number | Function | Manufacturers | |
| 1N4007 | The 1N4007 is a rectification diode that is designed for high-voltage applications, typically up to 1000V. It has a maximum current rating of 1A and a forward voltage drop of around 0.7V. |
 Vishay |
|
| LM317 | This is a popular adjustable voltage regulator. |
 ON Semiconductor |
|
6N137 | LM393 | 2N3906 | 2N2222 | TIP120 | 1N5818 | LM324N | A1015 | SMAJ20CA |
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